Remove columns from dataframe where some of values are NA

Question

I have a dataframe where some of the values are NA. I would like to remove these columns.

My data.frame looks like this

    v1   v2 
1    1   NA 
2           


        

Answer 1

A base R method related to the apply answers is

Itun[!unlist(vapply(Itun, anyNA, logical(1)))]
  v1
1  1
2  1
3  2
4  1
5  2
6  1

Here, vapply is used as we are operating on a list, and, apply, it does not coerce the object into a matrix. Also, since we know that the output will be logical vector of length 1, we can feed this to vapply and potentially get a little speed boost. For the same reason, I used anyNA instead of any(is.na()).